CN101660597A - Limited slip differential for cylindrical gear set - Google Patents
Limited slip differential for cylindrical gear set Download PDFInfo
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- CN101660597A CN101660597A CN 200810119210 CN200810119210A CN101660597A CN 101660597 A CN101660597 A CN 101660597A CN 200810119210 CN200810119210 CN 200810119210 CN 200810119210 A CN200810119210 A CN 200810119210A CN 101660597 A CN101660597 A CN 101660597A
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Abstract
The invention discloses a limited slip differential for a cylindrical gear set, which is characterized in that: the inside of an intermediate drive disk is provided with a plurality of pairs of firstand second accommodating cavities to ensure a plurality of differential gears of two groups of transmission gear sets are correspondingly accommodated and engaged respectively; the differential gearsof different transmission gears sets are connected with planetary gears on different sides; a plurality of planetary gears of the same transmission gear set are together engaged with a sun gear; and the axial centre of the sun gear is inserted inwards into the intermediate drive disk to position, and extends outwards to connect wheel shafts on the two sides directly or indirectly. The limited slipdifferential for the cylindrical gear set has the steering differential function same as the conventional differential, and also has the speed limiting gear pump function between the differential gears engaged with each other; and when the rotating speed difference between the wheel shafts on the two sides exceeds a rated reflux quantity of an oil liquid, back pressure of oil pressure is formed to limit the enlargement of the speed difference between the two shaft wheels on the two sides, so that the differential and limited slip effects are achieved between the two shaft wheels on the two sides at the same time.
Description
(1) technical field:
A kind of limited slip differential for cylindrical gear set of the present invention, be meant that especially a kind of differential gear that utilizes two groups of driving gear set makes bridle joint and engage, and to different side joints establish planetary pinion again bridle joint drive sun gear and the axle center is rotated, and the direct or indirect limited slip differential for cylindrical gear set that constituted of link traffic instrument two side wheel axles; When speed discrepancy exceeds the specified capacity of reflux of fluid between the differential gear of mutual bridle joint, promptly form the expansion of oil pressure back pressure restriction both sides wheel shaft speed discrepancy, make both sides wheel between centers produce differential and the sliding effect of limit simultaneously.
(2) background technique:
Differential mechanism is that to advance when turning be to deal with the two side wheel body rotating speeds device of setting up inequality to vehicle.Early stage differential mechanism is the simple mechanical type structure, main side gear bridle joint by two epicyclic singleplent helical gears and two side wheel axles, the drive of bearing these side gear different rotating speeds during with turning; Promptly two wheels are met any ground environment and when doing the rotation of different rotating speeds, differential mechanism has only by movingly, and can't go to limit the rotation of wheel shaft.Therefore if wet and slippery or single-wheel is unsettled when causing single-wheel to skid, promptly cause another to take turns the phenomenon that also loses driving force simultaneously because of ground.Therefore, promptly had the device of limited-slip differential to come out afterwards, its effect is to allow wheel shaft be unlikely to dally or run out of steam.The kind and the contexture of limited-slip differential are a lot of, and the mechanical type of reaching the sliding effect of limit with clutch is arranged; There is the frictional force that combination produced of utilizing spiral gear to bring into play the torque sensing formula of the sliding effect of limit; Have by a plurality of clutch plate to combine, seeing through spraying into of silicone oil (tool high viscosity, high temperature expansion characteristics), to make left and right sides wheel shaft produce revolution poor, and it is multiple to utilize the stickiness of silicone oil to make the stickiness manifold type that locks etc. again.Limited-slip differential known today has structure complicated more, maintenance service is difficult for, and must the differential scope is big just can have an effect, real in using the defective on the effect, so it is simple and easy how to research and develop a kind of structure of design, ease of assembly and maintenance service, and also processing cost is relatively low, limit is slided effect really effectively, at the limited-slip differential that the differential scope hour is promptly had an effect, be pressing on the traffic safety in fact.
(3) summary of the invention:
It is simple and easy that a kind of limited slip differential for cylindrical gear set of the present invention, its main purpose provide a kind of structure, and ease of assembly and maintenance service make the relatively low limited slip differential for cylindrical gear set of processing cost.The sliding effect of limit can promptly take place in differential scope hour in this limited slip differential for cylindrical gear set.
A kind of limited slip differential for cylindrical gear set of the present invention is to be assembled in the limited-slip differential that uses on the traffic tool, and it includes:
One assembly housing body is corresponding kenel and can and be changed to sealing person; Drive plate in the middle of one receives in the space of this assembly housing body and postpone, offers most appearance caves to circular arc on the card, holds cave and second by first respectively and holds the cave side by side and partly overlapping is arranged and communicate; Two bond pads, two sides that place this centre drive plate of reclining are respectively made interlocking and are engaged to make and be synchronization motion, on the card respectively cloth show through hole; And two groups of driving gear set, respectively by most differential gears, a most planetary pinion and a sun gear are formed, wherein most differential gears of one group of driving gear set receive into respectively in most the first appearance caves, most differential gears of another group driving gear set then receive into most second respectively to be held in the cave, every pair juxtaposed first, be the bridle joint jointing state between the differential gear that is received in the two appearance caves, through hole on these bond pads places a location and an affixed planet gear for the axle center of these differential gears, and the planetary pinion of each side also engages with being bridle joint with a sun gear; The axle center of these sun gears is outwards extended also extended outside the scope of frame respectively to two sides, directly or indirectly to become two side wheel axles of the traffic tool; During assembling, fluid is injected in the juxtaposed space range of these framies, and first and second that makes drive plates in the middle of these holds cave and differential gear and form majority at least one group in organizing and contain and be dipped in the fluid; The power of the traffic tool that the common assemblying body acceptance in this centre drive plate and two side engagement dishes and sun gear axle center is installed directly or indirectly drives when rotating, fluid can be driven to be passed through from the gap between the differential gear end face of bridle joint, the oil pressure back pressure that produces so mat both sides wheel shaft speed discrepancy exceeds the specified capacity of reflux of fluid, can limit the expansion of both sides wheel shaft speed discrepancy, so that two side wheel axles of the traffic tool produce differential and the sliding effect of limit.
In above-mentioned limited slip differential for cylindrical gear set, the central authorities of this centre drive plate card offer an insertion slot, the central authorities of these bond pads then respectively offer one with the corresponding juxtaposed insertion slot of insertion slot of this centre drive plate, for the axle center of these sun gears inwardly plant respectively when the assembling on these bond pads insertion slot and arrive in the insertion slot of this centre drive plate and be positioning action.
In above-mentioned limited slip differential for cylindrical gear set, the differential gear that belongs to different driving gear set receives into corresponding first and second respectively to be held behind cave promptly towards homonymy not and stretches out joining section, and these joining sections all pass an affixed planet gear behind the through hole on the bond pad.
In above-mentioned limited slip differential for cylindrical gear set, planetary pinion can be produced by consubstantiality on the axle center of differential gear.
In above-mentioned limited slip differential for cylindrical gear set, sun gear is in the central space that is placed between planetary pinion, and all is bridle joint with planetary pinion and engages.
In above-mentioned limited slip differential for cylindrical gear set, sun gear can be the wheeled person of inner circular tooth, with ring bridle joint in planetary pinion is enclosed in.
In above-mentioned limited slip differential for cylindrical gear set, tool is provided with tooth on the circumference of this centre drive plate, drive rotation in the juxtaposed space of these framies, to accept an actuation gear bridle joint, the axle center of this actuation gear stretches through out outside these framies, and the power of accepting institute's installing traffic tool directly or indirectly drives rotation, causes that this actuation gear of interlock drives this centre drive plate and two side engagement dish threes do synchronous rotation.
In above-mentioned limited slip differential for cylindrical gear set, the tooth of this centre drive plate can be given prominence to outside the periphery of these bond pads.
In above-mentioned limited slip differential for cylindrical gear set, a helical teeth dish is more extended in the outside of one bond pad, drive rotation to accept a helical gear bridle joint, this helical gear axle center then stretches through out outside the frame, and the power of accepting institute's installing traffic tool directly or indirectly drives rotation, cause this helical gear of interlock and drive this helical teeth dish rotation, and,, the rotation of this helical teeth dish does synchronous rotation so promptly driving the bond pad three of these bond pads and middle drive plate and other side because of this helical teeth dish and this bond pad are consubstantialities.
In above-mentioned limited slip differential for cylindrical gear set, these framies can be affixed respectively with bond pad, and affixed more respectively the extending of frame overlapped the outer sleeve body of catching the central gear shaft heart, affixed joint one sprocket wheel on the outer sleeve body wherein, the power of the traffic tool that acceptance is installed directly or indirectly drives by chain via another sprocket wheel and rotates, and causes these framies of interlock and drives this centre drive plate and the rotation synchronously of two side engagement dishes do.
In above-mentioned limited slip differential for cylindrical gear set, the every pair of circular arc describe the cave about two sides each all offer thin groove and all pass to a groove that passes through that runs through card in the front and back of this centre drive plate card two faces, then offer on these bond pads with these and pass through the corresponding hole, cave of groove, circulate for fluid.
In above-mentioned limited slip differential for cylindrical gear set, outside these holes, cave, all be provided with one on these bond pads and scrape oil clot, direction is set all towards the central point of bond pad.
In above-mentioned limited slip differential for cylindrical gear set, on the outer surface of these bond pads, can be provided with the terrace of decline.
In above-mentioned limited slip differential for cylindrical gear set, the cylin-drical tooth wheels that adopted comprise that differential gear, planetary pinion and sun gear can be any gear trains in spur wheel (Spur Gear), spiral spur gear (HelicalGear) or the herringbone gear (Double-Helical Gear).
A kind of limited slip differential for cylindrical gear set of the present invention, its advantage and effect are:
1. with regard to the contexture of limited-slip differential, fully never the someone adopts as contexture of the present invention.
2. cylin-drical tooth wheels of the present invention, comprise that differential gear, planetary pinion and sun gear all are the standard spare parts, painstakingly die sinking manufacturing again, and the unitary construction composition simply is easy to assembling, maintenance in the future is also comparatively convenient, therefore can reduce whole manufacturing and maintenance cost relatively.
3. cylin-drical tooth wheels of the present invention comprise that differential gear, planetary pinion and sun gear can be any gear trains in spur wheel (Spur Gear), spiral spur gear (Helical Gear) or the herringbone gear (Double-Helical Gear).
Among the present invention for the fluid that produces the required adding of the sliding effect of limit is similarly the fluid that general differential mechanism adopts, do not need to adopt extra special fluid, and the fluid amount is same as also generally, can not increase cost; But the present invention designs to utilize and scrapes oil clot or action of centrifugal force formation complete loops, still can enter when making fluid be driven eminence in hole, cave and the appearance cave, so that produce the speed limit effect between differential gear, is that known differential mechanism does not have.
5. limited-slip differential of the present invention can be brought into play the sliding effect of limit under the little scope of two side shaft heart differentials.
(4) description of drawings:
Fig. 1 is the contexture schematic representation of first embodiment of the invention.
Fig. 2 mainly forms the three-dimensional exploded view at position for first embodiment of the invention.
Fig. 3 is the three-dimensional exploded view after first embodiment of the invention is partly assembled.
Fig. 4 mainly forms the stereogram at position for first embodiment of the invention.
Fig. 5 mainly forms the side view at position for first embodiment of the invention
Fig. 6 is the contexture schematic representation of second embodiment of the invention.
Fig. 7 is the contexture schematic representation of third embodiment of the invention.
Fig. 8 mainly forms the stereogram at position for third embodiment of the invention.
Fig. 9 mainly forms the side view at position for third embodiment of the invention
Figure 10 produces planetary organigram in the embodiment of the invention with the direct consubstantiality in the axle center of differential gear.
Figure 11 is that sun gear adopts inner circular tooth wheeled in the embodiment of the invention, and planetary pinion is enclosed in the organigram of interior ring bridle joint.
Number in the figure is described as follows:
10---limited- slip differential 11,12---frame 111,121---outer sleeve body
133---second holds cave 1321, the thin groove 134---of 1331---passes through groove
135---insertion slot 100,101---driving gear set 136,137---differential gear
1361,1371---joining section 362,1372--- planetary pinion 1363,1373---sun gear
1364,1374--- axle center 14,15---bond pad 141,151---terrace
144, hole, 154--- cave 1441,1541---scrape oil clot 145,155---plants
146,147,156,157---through hole 148---helical teeth dish 16---actuation gear
17---helical gear 171---axle center, 161---axle center 18---sprocket wheel
(5) embodiment:
Shown in Fig. 1-5, be the structure assembling schematic representation of first embodiment of the invention limited-slip differential 10.The structure of limited-slip differential 10 is that 100,101 of 14,15 and two groups of driving gear set of pair of engaging dish assemble jointly by drive plate 13 in the middle of a pair of frame 11,12, substantially.
These framies 11,12 are corresponding kenel and can and be changed to sealing; 13 of this centre drive plates receive into these framies 11, in the 12 juxtaposed spaces, tool is provided with the tooth 131 that is driven usefulness on its circumference, then offer most on the card to first of circular arc, two hold cave 132,133 (" most to " of this indication are meant two to more than (containing), present embodiment is an example with three pairs), be to hold cave 132 by one first respectively to hold cave 133 side by side and have part overlapping and communicate with one second, in first of every pair of circular arc, two hold cave 132, two sides respectively all offer thin groove 1321 in the front and back of card two faces about 133,1331 and pass to one run through card pass through groove 134, the central authorities in card offer an insertion slot 135 in addition.
Two groups of driving gear set 100,101 respectively respectively by most differential gears 136,137, a most planetary pinion 1362,1372 and sun gears 1363,1373 form that (" most " of this indication were meant more than two (containing), present embodiment is an example with three), a most differential gear 136 promptly receive into most first respectively to be held in the cave 132, a most differential gear 137 then receive into most second respectively to be held in the cave 133, its quantity must be corresponding, and every pair juxtaposed first, two hold cave 132, the differential gear 136 that is received in 133,137 are the bridle joint jointing state, wherein, the axle center of each differential gear 136 all towards homonymy (at Fig. 1,2, in 3 for the right side) stretch out a joining section 1361, the axle center of each differential gear 137 then all towards other side (first, two, among three figure for the left side) stretch out a joining section 1371, these joining sections 1361,1371 can the side's of being croze or keyway etc. can be in order to the structure of doing to engage.
These bond pads 14,15 place two sides of this centre drive plate 13 to make interlocking joint by (subsides) respectively and make and be synchronization motion, and the tooth 131 of this centre drive plate 13 is given prominence to outside the periphery of these bond pads 14,15; The central authorities of these bond pads 14,15 respectively offer an insertion slot 145,155, be insertion slot 135 corresponding can and putting with this centre drive plate 13, on the card then respectively cloth show the through hole that the axle center places and joining section 1361,1371 passes 146,147 and 156,157 for these differential gears 136,137, and pass through the corresponding hole, cave 144,154 of groove 134 with these, and outside these holes, cave 144,154, be provided with one and scrape oil clot 1441,1541, it is provided with the central point of direction towards bond pad 14,15; Through after the above-mentioned assembling, can respectively stretch out most joining sections 1371,1361 in these bond pad 14,15 outsides, its quantity must be corresponding with the quantity of these differential gears 136,137.
Then, the affixed planetary pinion 1362,1372 of difference on these joining sections 1361,1371, and in these planetary pinions 1362 and 1372 s' central space, respectively receive into a sun gear 1363,1373, and sun gear 1363,1373 respectively with these planetary pinions 1362,1372 with being the bridle joint jointing states; The axle center 1364,1374 of these sun gears 1363,1373 inwardly plants insertion slot 145,155 respectively and arrives in the juxtaposed insertion slot 135 to be positioning action, outside then extend and extended outside the scope of frame 12,11 to two sides respectively, with two side wheel axles of direct or indirect link traffic instrument; Certainly can group be provided with necessary assemblies such as bearing and oil sealing between these axle center 1364,1374 and the frame 12,11, smooth and easy in order to action.
The tooth 131 of this centre drive plate 13 is accepted an actuation gear 16 bridle joints and is driven rotation in these frame 12,11 juxtaposed spaces, the axle center 161 of this actuation gear 16 frame 12 (or 11) that stretches through out, certainly can group be provided with necessary assemblies such as bearing and oil sealing between this axle center 161 and frame 12 (or 11), smooth and easy in order to action, this repeats no more.After finishing above-mentioned assembling, in these frame 12,11 juxtaposed space ranges, inject fluid, and make this centre drive plate 13 first and second hold cave 132,133, thin groove 1321,1331 and pass through groove 134; And the differential gear 136,137 of these driving gear set 100,101, joining section 1361,1371 and planetary pinion 1362,1372; And the hole, cave 144,154 of these bond pads 14,15, scrape oil clot 1441,1541 and through hole 146,147,156,157 and form in most groups at least one group and contain to be dipped in the fluid and get final product.That is fluid is not to be full of wholely by in 12,11 juxtaposed spaces of frame, but the liquid level amount shown in first figure gets final product.
(for example: power vehicle) directly or indirectly drives rotation to the traffic tool that these axle center 161 acceptance are installed in the use, and this actuation gear 16 of interlock drives these centre drive plates 13 and bond pad 14,15 threes rotate synchronously.When two axle center 1364,1374 (being two side wheel axles of direct or indirect link traffic instrument) when advancing (or retreating) with speed, this centre drive plate 13 and bond pad 14,15 threes can firmly be relative static conditions because of the differential gear 136 and the 137 mutual clips of bridle joint together with the driving gear set 100,101 that is installed in it, therefore can only co-rotation.And when two axle center 1364,1374 produce speed discrepancy because of the traffic tool turn to, 1363 of the planetary pinion 1362 of this driving gear set 100 and sun gears, and the planetary pinion 1372 of this driving gear set 101 and 1373 of sun gears promptly produce one fast one slow relative movement and are born so effect that promptly produces differential mechanism by the differential gear 136,137 of bridle joint.
As previously mentioned, though in these differential gears 136,137 and these planetary pinions 1362,1372 formed most groups being at least one group contains to be dipped in the fluid and gets final product, but when the traffic tool are advanced, this centre drive plate 13 and bond pad 14,15 threes and these differential gears 136,137 and these planetary pinions 1362,1372 can be done revolution synchronously, so promptly can containing in turn, every group differential gear 136,137 and these planetary pinions 1362,1372 be dipped in the fluid, if promptly there is one group to leave fluid, then organize separately and can immerse at once, so in turn; And the group of leaving still has fluid and is infected with from the teeth outwards, and public affairs turn around and promptly immerse again in the fluid, so goes round and begins again; Therefore when reality is used, almost be that each is organized at any time and all has been infected with fluid on the surface.
When containing the differential gear 136 that is dipped in the fluid with 137 when bridle joint rotates, fluid promptly can be driven to be passed through from the gap between the increment face, but rotating speed is fast more or end face between the more little then fluid in gap be not easy more to pass through fast, promptly the end clearance corresponding to these differential gears 136 and 137 bridle joints has a specified capacity of reflux existence, when the differential gear 136 of mutual bridle joint and 137 s' speed discrepancy exceeds specified capacity of reflux, promptly can form an oil pressure back pressure and limit the expansion of speed discrepancy therebetween, and then convert to these axle center 1364,1374 speed discrepancy restriction, thus make limited-slip differential 10 produce the sliding effect of limit.When therefore driving a vehicle, because of road conditions influence (caving in or cross water in the road surface) has single-wheel to produce skidding, but under the effect that two side wheel axle speed discrepancies are restricted, another ground engaging stabiliser wheel still can be dynamic, and can leave predicament fast, with dangerous phenomenons such as the stranded and vehicle slips of deduction and exemption vehicle.
As shown in Figure 3, because of these differential gears 136 and 137 are to be placed in corresponding first, two hold cave 132, in 133, so fluid is concentrated easily, and every pair is held cave 132, after rising in 133, fluid in it can be via thin groove 1321,1331, pass through groove 134 and thin groove 1321,1331 are circulated to adjacent first downwards, two hold cave 132, in 133, add each hole, cave 144,154 outer all being provided with are scraped oil clot 1441,1541, can be when rotate rising fluid be scraped and enter hole, cave 144, in 154, making the differential gear 136 and 137 that leaves fluid still can possess fluid passes through, therefore every group of differential gear 136 and 137 can be just as place's speed limiting gear wheel pump, as long as and be to have to do the sliding effect of rising limit in three groups of differential gears 136 and 137, then integral body can produce significant slide limiting differential effect.
Then, as shown in Figure 6, be the structure assembling schematic representation of second embodiment of the invention limited-slip differential 20.The contexture of limited-slip differential 20 and first embodiment's limited-slip differential 10 have exhausted most something in common (therefore exist together mutually and promptly repeat no more), and difference be in: (1) does not have the tooth 131 among first embodiment to exist; (2) a helical teeth dish 148 is more extended in the outside of this bond pad 14, drives with the bridle joint of accepting a helical gear 17 and rotates, and 171 in the axle center of this helical gear 17 stretches through out outside the frame 11,12.
Second embodiment's limited-slip differential 20 uses the traffic tool of promptly being installed by these axle center 171 acceptance, and (for example: power vehicle) directly or indirectly drives rotation, cause this helical gear 17 of interlock and drive this helical teeth dish 148 rotations, and because of this helical teeth dish 148 are consubstantialities with this bond pad 14, so the rotation of this helical teeth dish 148 promptly drives these bond pads 14 and does synchronous rotation with middle drive plate 13 and bond pad 15 threes, follow-up generation and the identical differential of first embodiment and the sliding action and efficacy of limit.
Then, as shown in Figure 7, be the structure assembling schematic representation of third embodiment of the invention limited-slip differential 30.The contexture of limited-slip differential 30 and first embodiment's limited-slip differential 10 have exhausted most something in common (therefore exist together mutually and promptly repeat no more), and difference be in: (1) does not have the tooth 131 among first embodiment and scrapes oil clot 1441,1541 to exist; (2) these framies 11,12 and bond pad 14,15 are affixed, frame 11,12 is more distinguished an affixed outer sleeve body 111,121 then, these outer sleeve bodies the 111, the 121st are extended outward with cover respectively by frame 11,12 and to catch axle center 1374,1364, wherein, a more affixed sprocket wheel 18 on one outer sleeve body 121 (or 111) is arranged, and this sprocket wheel 18 is to accept another sprocket wheel (not being shown in figure) to be driven and rotated by chain (not being shown in figure); (3) shown in Fig. 8,9, on the outer surface of bond pad 14,15, be provided with the terrace 141,151 of decline, offer hole, cave 144,154 on it equally.
The 3rd embodiment's limited-slip differential 30 uses the traffic tool of promptly being installed by these sprocket wheel 18 acceptance, and (for example: power vehicle) directly or indirectly drives by chain via another sprocket wheel and rotates, causing this outer sleeve body 121 (or 111) of interlock rotates synchronously with this axle center 1364 (or 1374), and then these framies 11,12 of interlock and bond pad 14,15 and rotates all synchronously with middle drive plate 13, when just marching forward or retreating, there is not the synchronous rotation of speed difference with 1374 because of these axle center 1364; Because of having turned to when difference speed, promptly produce and identical differential of first embodiment and the sliding effect of limit then.What this must further specify be, though it is affixed with frame 11,12 respectively on the outer surface of these bond pads 14,15, but be provided with the terrace 141,151 of decline because of the outer surface of bond pad 14,15, therefore the spaces that produced in these terraces 141,151 promptly enclose respectively be overlying on bond pad 14,15 and frame 11,12 between, and can circulate mutually because of the existence in these holes, cave 144,154 and appearance cave 132,133.Fluid is non-in the 3rd embodiment is full of wholely by in frame 12,11 spaces of being defined, but liquid level amount as shown in Figure 7 gets final product; When these bond pads 14,15 rotated, fluid was driven rotation, and because of centrifugal action can enter inside downwards in the circulation set by hole, cave 144,154, and at least one group of differential gears 136 and 137 that hold in the cave 132,133 was contained be dipped in the fluid; As long as there is one group to be difficult for quick in therefore most group differential gears 136 and 137 by then producing the sliding action and efficacy of limit because of fluid.
In the contexture of the above embodiment of the present invention, have following variation meeting to be included by claims of the present invention, the careful reinforcement is described as follows:
1. in Fig. 1-9, a joining section 1361,1371 can be stretched out in the axle center of each differential gear 136,137, for an affixed planetary pinion 1362,1372 usefulness of difference; And can be as shown in figure 10 when reality is implemented, on the axle center of these differential gears 136,137, do not mold joining section 1361,1371 (promptly omitting the moulding of joining section 1361,1371), but directly be the structure that consubstantiality produces planetary pinion 1362,1372, same again bridle joint sun gear 1363,1373; When this kind situation, the planetary pinion 1362,1372 in Figure 10 should be little than Fig. 5, but 1363,1373 of sun gears can be big than Fig. 5.
2. in Fig. 1-9, respectively receive in the central space that these planetary pinions are 1362,1372 one with these planetary pinions 1362,1372 with the sun gears 1363,1373 that are the bridle joint jointing state; Promptly presenting 1363,1373 of sun gears in Fig. 1-9 is most planetary pinion 1362,1372 states that surrounded in central authorities; But when implementing, reality can adopt the wheeled sun gear 1363,1373 of inner circular tooth as shown in figure 11; Being about to sun gear 1363,1373, to expand as inner circular tooth wheeled, and the ring bridle joint is then identical as for its action and efficacy in instead these planetary pinions 1362,1372 being enclosed in.
By above explanation as can be known, the frame the 11, the 12nd among first and second embodiment of the present invention maintains static movingly, and the frame 11,12 among the 3rd embodiment then is along with rotation; Moreover, no matter power of the present invention is directly to introduce (as first embodiment) via this centre drive plate 13, or introduce (as second embodiment) via the bond pad 14 (or 15) of two sides, or via the outer sleeve body 111 (or 121) of two sides, frame 11 (or 12) and bond pad 14 (or 15) are introduced (as the 3rd embodiment), all can arrive this centre drive plate 13 and two side engagement dishes 14,15 threes' combination is again via these differential gears 136,137 and these planetary pinions 1362,1372 with sun gear 1363,1373 effect and produce differential and the sliding action and efficacy of limit.Why former the present invention as can be known can produce differential and limit sliding effect most important is by these bond pads 14,15 and middle drive plate 13 threes, and the differential gear 136,137 of these different driving gear set 100,101; 1363,1373 actings in conjunction of planetary pinion 1362,1372 and sun gear and producing.So these bond pad 14,15 and middle drive plates 13, and differential gear 136,137 of these driving gear set 100,101; 1363,1373 common devices of forming of planetary pinion 1362,1372 and sun gear promptly become main composition of the present invention position, simultaneously also because these driving gear set 100,101 differential gears that adopted 136,137; Planetary pinion 1362,1372 and sun gear 1363,1373 all are columniform gears, so name of the present invention is called limited slip differential for cylindrical gear set.
Claims (14)
1. a limited slip differential for cylindrical gear set is to be assembled in the limited-slip differential that uses on the traffic tool, includes:
One assembly housing body is corresponding kenel and is changed to sealing;
Drive plate in the middle of one receives in the space of this assembly housing body, offers the appearance cave of circular arc on the card, holds cave and second by first respectively and holds the cave side by side and overlapping the communicating of part arranged;
Two bond pads, two sides that place this centre drive plate of reclining are respectively made interlocking and are engaged, and are synchronization motion, on the card respectively cloth show through hole; And
Two groups of driving gear set, formed by differential gear, planetary pinion and sun gear respectively, wherein the differential gear of one group of driving gear set receives in the first appearance cave, the differential gear of another group driving gear set then receives into second to be held in the cave, every pair of juxtaposed first and second holds between the differential gear that is received in the cave and is the bridle joint jointing state, through hole on these bond pads places a location and an affixed planet gear for the axle center of these differential gears, and the planetary pinion of each side engages with a sun gear bridle joint; Outwards extend to two sides respectively in the axle center of these sun gears, extended outside the scope of frame, directly or indirectly becomes two side wheel axles of the traffic tool;
During assembling, fluid is injected in the juxtaposed space range of these framies, and first and second that makes drive plates in the middle of these holds cave and differential gear and form majority at least one group in organizing and contain and be dipped in the fluid; The power of the traffic tool that the common assemblying body acceptance in this centre drive plate and two side engagement dishes and sun gear axle center is installed directly or indirectly drives when rotating, fluid can be driven to be passed through from the gap between the differential gear end face of bridle joint, the oil pressure back pressure that produces so both sides wheel shaft speed discrepancy exceeds the specified capacity of reflux of fluid, can limit the expansion of both sides wheel shaft speed discrepancy, make two side wheel axles of the traffic tool produce differential and the sliding effect of limit.
2. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: the central authorities of this centre drive plate card offer an insertion slot, the central authorities of these bond pads then respectively offer one with the corresponding juxtaposed insertion slot of insertion slot of this centre drive plate, insertion slot when assembling on inside these bond pads of planting respectively for the axle center of these sun gears, and locate in the insertion slot of this centre drive plate.
3. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: the differential gear that belongs to different driving gear set receives into corresponding first and second respectively to be held behind cave promptly towards homonymy not and stretches out joining section, these joining sections all pass the through hole on the bond pad, and an affixed planet gear.
4. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: planetary pinion is by consubstantiality manufacturing on the axle center of differential gear.
5. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: sun gear is in the central space that is placed between planetary pinion, and is bridle joint with planetary pinion and engages.
6. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: sun gear is that inner circular tooth is wheeled, ring bridle joint in planetary pinion is enclosed in.
7. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: tool is provided with tooth on the circumference of this centre drive plate, make and accept actuation gear bridle joint drive rotation in the juxtaposed space of these framies, the axle center of this actuation gear stretches through out outside these framies, and the power of accepting institute's installing traffic tool directly or indirectly drives rotation, and this actuation gear of interlock drives this centre drive plate and two side engagement dish threes do synchronous rotation.
8. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: the tooth of this centre drive plate can be given prominence to outside the periphery of these bond pads.
9. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: a helical teeth dish is extended in the outside of a bond pad, drive rotation to accept a helical gear bridle joint, this helical gear axle center then stretches through out outside the frame, and the power of accepting institute's installing traffic tool directly or indirectly drives rotation, this helical gear of interlock drives this helical teeth dish and rotates, this helical teeth dish and this bond pad are consubstantialities, and the bond pad three that the rotation of this helical teeth dish promptly drives these bond pads and middle drive plate and other side does synchronous rotation.
10. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: these framies and bond pad are affixed respectively, and affixed respectively the extending of frame overlapped the outer sleeve body of catching the central gear shaft heart, affixed joint one sprocket wheel on the outer sleeve body wherein, the power of the traffic tool that acceptance is installed directly or indirectly drives by chain via another sprocket wheel and rotates, and these framies of interlock drive this centre drive plate and two side engagement dishes are done rotation synchronously.
11. limited slip differential for cylindrical gear set according to claim 1, it is characterized in that: two sides respectively all offer thin groove in the front and back of this centre drive plate card two faces about every pair of circular arc appearance cave, and pass to a groove that passes through that runs through card, then offer the hole, cave of passing through the corresponding fuel feeding liquid circulation of groove with these on these bond pads.
12. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: outside these holes, cave, all be provided with one on these bond pads and scrape oil clot, direction is set all towards the central point of bond pad.
13. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: the terrace that on the outer surface of these bond pads, is provided with decline.
14. limited slip differential for cylindrical gear set according to claim 1 is characterized in that: the cylin-drical tooth wheels that adopted comprise that differential gear, planetary pinion and sun gear are a kind of gear train in spur wheel, spiral spur gear and the herringbone gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810119210 CN101660597B (en) | 2008-08-29 | 2008-08-29 | Limited slip differential for cylindrical gear set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810119210 CN101660597B (en) | 2008-08-29 | 2008-08-29 | Limited slip differential for cylindrical gear set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101660597A true CN101660597A (en) | 2010-03-03 |
| CN101660597B CN101660597B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810119210 Expired - Fee Related CN101660597B (en) | 2008-08-29 | 2008-08-29 | Limited slip differential for cylindrical gear set |
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| Country | Link |
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| CN (1) | CN101660597B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494102A (en) * | 2011-12-19 | 2012-06-13 | 大连理工大学 | Hydraulic-control limited rotational speed difference differential |
| CN102720820A (en) * | 2011-03-30 | 2012-10-10 | 张维国 | Difference-adjusting differential for wheelchair |
| CN103671813A (en) * | 2012-09-14 | 2014-03-26 | 谢夫勒科技股份两合公司 | Transmission device for cylindrical gear-type differential mechanism |
| CN108412981A (en) * | 2018-04-19 | 2018-08-17 | 广东机电职业技术学院 | A kind of planet gear type differential mechanism |
| CN110107669A (en) * | 2019-04-30 | 2019-08-09 | 朱文辉 | Cylindrical planetary gear differential mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738192A (en) * | 1971-06-29 | 1973-06-12 | Illinois Tool Works | Limited slip differential mechanisms |
| US4389908A (en) * | 1979-12-26 | 1983-06-28 | Astro Development Corporation | Partially fluid locked drive train |
| IT1211443B (en) * | 1987-10-30 | 1989-10-26 | Ferrari Eng | DIFFERENTIAL DEVICE OF THE CONTROLLED SLIP TYPE |
| US6402656B1 (en) * | 2000-03-03 | 2002-06-11 | Mark Peralta | Limited slip differential |
-
2008
- 2008-08-29 CN CN 200810119210 patent/CN101660597B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720820A (en) * | 2011-03-30 | 2012-10-10 | 张维国 | Difference-adjusting differential for wheelchair |
| CN102494102A (en) * | 2011-12-19 | 2012-06-13 | 大连理工大学 | Hydraulic-control limited rotational speed difference differential |
| CN102494102B (en) * | 2011-12-19 | 2013-12-25 | 大连理工大学 | Hydraulic-control limited rotational speed difference differential |
| CN103671813A (en) * | 2012-09-14 | 2014-03-26 | 谢夫勒科技股份两合公司 | Transmission device for cylindrical gear-type differential mechanism |
| CN108412981A (en) * | 2018-04-19 | 2018-08-17 | 广东机电职业技术学院 | A kind of planet gear type differential mechanism |
| CN110107669A (en) * | 2019-04-30 | 2019-08-09 | 朱文辉 | Cylindrical planetary gear differential mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101660597B (en) | 2013-05-01 |
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